Pump for stereotyping and means for supplying metal thereto



H. A. W. WOOD.

PUMP FOR STEREOTYPING AND MEANS FOR SUPPLYING METAL THERETO. APPLICATION FILED MAR. 23 I918. mzuiww JUNE 4,1921.

1,406,518. Patented Feb. 14, 1922.

4 SHEETS-SHEET I.

H. A. w. W000. PUMP FOB STEREOTYPJNG AND MEANS FOR SUPPLYING METAL 'IHERETO.

APPLIC A'TION FILED MAR. 23, 1918- RENEWED JUNE 4,1921- 1,406,518. Patented FebQ14, 1922 4 SHEETS-SHEET 2.

ymnzyr H. A. W. WOOD.

PUMP FOR STEREOTYPING AND MEANS FOR SUPPLYING METAL THERETO.

APPLICATION FILED um. 23. ms. RENEWED um: 4.1921.

1,406,518. Patented Feb. 14, 1922.

4 suns-sun a.

H. A. W. WOOD.

PUMP FOR STEREOTY PING AND MEANS FOR SUPPLYING METAL THERETO.

APPuc/morq men 1mg. 23, ms. mzuzyvzo IUNE4, l92l- 1,406,51 Patented Feb. 14, 19

4 SHEETS-SHEET 4- UNITED STATES PATENT OFFICE.

HENRY A. WISE WOOD, OF NEW YORK, N. Y., ASSIGNOR TO WOOD NEWSPAPER MACHINERY CORPORATION, OF NEW YORK, N. Y., A CORPORATION OF VIR- G-INIA.

Specification of Letters Patent.

Patented Feb. 14, 1922.

Original application filed September 16, 1913, Serial No. 790,071. Divided and this application filed March 23, 1918, Serial No. 224,218.

T 0 all whom it may concern:

Be it known that I, HENRY A. Wise 001), a citizen of the United States, residing at New York, in the county of New York and State of New York, have invented a new and useful Pump for Stereotyping and Means for Supplying Metal Thereto, of which the following is a specification.

This is a division of my application for patent on a mold for stereotyping and means for supplying metal thereto, Serial No. 790,071, filed Sept. 16, 1913, patented May 21, 1918, No. 1,266,740.

This invention relates to a pump for use in stereotyping apparatus, particularly for stereotyping machines of that kind in which the parts are operated by power such, for example, as shown in my application, Serial No. 726,239, filed October 17, 1912.

The principal objects of the invention are to provide a construction for this purpose in which the rate of delivery of the metal can be accurately adjusted to compensate for the varying heights of metal in the melting pot and the consequent varying pressure thereof, and to provide improved means co-operating therewith for delivering solid metal into the melting pot. at a speed proportionate to the speed of delivery of metal from the pump.

The invention also involves improvements in the details of construction of these various parts as will appear hereinafter.

Reference is to be had to the accompanying drawings in which Fig. 1 is a side elevation of a portion of 'astereotype casting and finishing apparatus, showing the application of a preferred vembodiment of this invention thereto;

Fig; 2 is an end view of the same with the melting pot in section to show interior Fig. 3 is a plan of the mechanism for operating the parts;

-Fi'g. 4: is a slde view of certain'parts of the apparatus with portions shown in seca Fig. 5 is a sectional view on a large scale on the line 5 5 of Fig. 4;

, Fig. 6 is an end. View of the portion of Serial No. 475,099.

the mechanism for feeding metal to the melting pot, and 4 Fig. 7 is a sectional view on the line 7T thereof.

The invention is shown as applied to a stereotype plate casting machine like that shown in my co-pending patent on a ma chine for casting and delivering curved. stereotype printing plates, filed on the 16th day of Sept, 1913, Serial No. 790,070. patented Dec. 3, 1918, No. 1,266,479.

Referring first to Figs. 1 and 2, it will be seen that a frame 10 is shown on which is a vertical. upright core 11, and a movable segmental back 12. This back is connected by a link 13 with a toggle yoke 14, fixed on a shaft 15. The link and toggle yoke are pivoted togetherto form a true toggle lever and means comprising links 16 and a cam 17 are shown for drawing down the central joint of the toggle and moving the back away from the core. The frame is provided with an eccentric bushing 20 in which the shaft 15 is loosely mounted. This shaft can be adjusted by turning the bushing by means of adjusting screws 21.

On this shaft is a cam 22 operating a roll 23 which is loosely mounted on a rod 24.- connected by a bell crank 25 with a swivel poppet 26. This poppet is mounted between collars 36 on a valve rod 27. A valve 28 on the bottom of this rod is arranged to open and close a port 29 in a cylinder 30 in the melting pot 31. The opening of this valve prevents effective operation of the pum as I have previously shown in my Patent No. 1,009,206. It will be seen, thercfore, that as the back starts to move away from the core, this valve will be opened, and consequently, the piston 32 in the cylinder 30 can continue to operate without forcing any metal through the nozzle 33. It simply causes it to circulate through the port 29.

For the purpose of operating the parts a motor 40 is shown operating a main shaft 41 in any desired way. This shaft in turn operates a cam shaft 42 on which is the cam 17 for operating the links 16, and consequently, the cam 22.

4 Also connected with. the main shaft 41,- I have shown a shaft 4 1 provided with a stopped by a fixed plate 88.

handle 4,5 for rotating the parts by hand and a shaft 46 connected to operate a shaft 47 having right and left worms 4L8 thereon to operate the elevator as will appear hereinafter.

On the cam shaft 42 is a cam 50 which operates a cam roll 51. This roll is mounted on one arm of a two-branched lever 52 which is pivoted to swing loosely on a shaft supported by the frame. The other arm of this lever is connected by a stud withan arm 55 also pivoted loosely on the shaft'53 and pivotally connected by a link 56 with a nut 57 which is movably mounted on a lever 58. This lever is keyed to the end of a shaft 59 and the nut 57 is ,adjustably connected with the lever by means of a screw 62 which engages the nut and ismounted on the lever radially with respect to the shaft. t will be obvious that the extent of motion imparted to the lever by the cam 50 will depnd upon the adjustment of the nut 57 on the screw 62. This adjustment is made by means of a hand wheel 63 having a sprocket 61 thereon. This sprocket operates a chain (55 which by means of other sprocket and chain connections operates a sprocket wheel. 61 fixed to the screw 62. I The hand wheel 63 is in a convenient place for manipulation by the operator to adjust the throw of the lever 58.

On the shaft 59 is an arm which by a link 71 is connected with a piston rod 72 to the bottom of which is secured the piston 32. It will be obvious, therefore, that the operation of, the hand wheel 63 adjusts the length of the stroke of this pistonso that a full charge of metal can be pumped into the mold when the level of metal in the pump is low. The pump is shown as provided with a mixer 73 operated by a motor 74 or in any other desired manner. v

For the purpose of feeding the metal to the melting pot the following mechanism is provided. On the frame is a chute S0 for receiving the tails T which are severed from the plates by the finishing mechanism (not shown). These tails T slide down this chute 111 the position indicated at the top of Fig. 6.

Qne advance corner of each one engages a pro ection 81 on one lower side of the chute. This cau es the tail to be turned around a quarter of a turn so that one of the straight edges is foremost. Then in this position it slides down an incline 82 which forms a part of the chute and which is at an angle to the chute 80, so as to be less abrupt. At the bottom of this incline one advance corner engages a projection 83011 the same side.

This causes 1t to turn again so 'that one of its curved edges is foremost. Then it slides by gravity over an incl ne 84. into a conveyor for elevating it into the melting pot. It is The conveyor is shown as located, in an inclined casing 85 provided with twoseparate bottoms S6 in the plane of the incline 84-.

The conveyor comprises two endless chains 87 which are operated by the twoworms 4L8 and worm wheels 98. The outer strands of the chains pass upwardly on the outsides of the bottoms 86 and the inner strands pass downwardly between these bottoms i j The two chains are provided with projections 89, kept in registration and so arranged that two of these projections pass upwardly on the outer strands together. Therefore. they engage the twocdges of the plate and cause the plate to travel upward y to the top of the conveyor by which it is dumped over into the melting pot. The chains pass over sprocket wheels 90 and 90 those at the top located over the melting'pot.

The projections on the innerstrands of the chains coming down at the center do not interfere with the ascent of the tail as they come within its concavity. It'will be understood. of course that these chains can be used to elevate used platesplaced in them byhand and in practice the chains are run at such a speedthat these plates can be put in alternately with the tails.

For the purpose of elevating pigs of metal, the casing is provided with a longitudinal projection 91 along one side'of the bottom. This forms with the side wall of the casing,

a passage way along which thepigs are elevated by one chain.

I have not claimed the conveyor herein as it is the subject of my co -divisional application Ser. No. 234,880, filed May 16,1918, Metal supplying device.

Although I have illustrated and described only a single embodiment of the invention, I am aware of the factthat many modifications can be made therein by any person skilled in the artrwithout' departing from the scope of the invention as expessed in the claims. i i 3 Therefore I do not wish to be limited to all the details of construction herein shown and described, but whatI do elaim1is:.

opening and closing said port to control the operativeness of the piston and cylinder for Wlth' said cam for operating said valve, at

delivering metal, a cam, means connected shaft on which said cam is keyed, an eccentric bushing in which said shaft is mounted, and means for turning said bushing to ad just the position of the cam.

3. In a pump for delivering molten metal,

the combination of a power shaft, a cam thereon, a two-armed lever, one arm of said lever engaging the cam, an arm connected with the other arm of said lever to swing about the pivot thereof, a link connected with the last named arm, a lever connected with the link, a pump piston, and means operated by said lever for operating said piston.

i. In a pump for delivering molten metal, the combination of a power operated shaft, a cam thereon, a link operated by said cam, a nut connected with said link, a lever, a screw on said lever engaging said nut, means for turning the screw to adjust the nut therealong, a piston, and means operated by said lever for operating said piston.

5. In a pump for delivering molten metal, the combination with a pump piston, and a lever for operating it, of a screw mounted 011 said lever in alignment with the pivot thereof, means for turning said screw, a nut on the screw, a link connected with said nut, and means for operating the link.

6. In a pump for delivering molten metal, 30

the combination with a pump piston, of a lever for operating it, means for oscillating the lever, and means adjustable along the lever for connecting the lever with said oscillating means.

7. In a pump for delivering molten metal, the combination with a pump piston, of a lever for operating the piston, a screw mounted on said lever, a nut adjustable on the screw, means connected with the nut for operating the lever, a hand wheel, and means connected with said hand wheel for turning the screw toadjust the position of the nut thereon.

8. The combination with a pump comprising a piston for delivering molten metal, of a driving shaft, means connected with said driving shaft to be driven thereby for operating the piston, a worm operated by the driving shaft, and means for delivering solid metal to said pump operated by said worm whereby the delivery of metal to the pump will be proportionate to the delivery of metal from the pump.

In testimony whereof I have hereunto 55 afiixed my signature.

HENRY A. WISE WOOD. 

